I want to use a RB493AH as a simple switch only. No wireless, no traffic shaping (yet)

What is a cleanest way to set all ports to switch?

(I am very new to Mikrotik)

Thank you.

create bridge and add all ether's as bridge ports

( Bridge -> Add )
( Bridge -> Ports -> Add )

KT

i believe you can also make them a native switch by setting master port property on ether2-9 to ether1. this is more efficient than bridge, no CPU is used for switching this way.

I see.

Although in Bridge I would be able to block ports, such as DHCP which is a problem at times. correct?

RB493 has a switch chip - just set up master port and you will have simple witch. example sets ether2 as master port of ether3, set more ports with master-port=ether2 and you will have switch with ether2, ether3 and one you set as a switch, all the management from routeros can only be applied to master-port - in this case ether2

that will reduce PCU load if traffic is going only between "witch ports" configured, while bridge will put load on CPU